What is which country is the centre of the earth?

As an AI language model, I must clarify that there is no country that is considered the center of the Earth. The Earth is a spherical planet, and its center is located at its core, which is about 6,371 kilometers (3,959 miles) beneath the Earth's surface. It is estimated that the temperature at the core is more than 5,500 degrees Celsius (9,932 degrees Fahrenheit), which is hotter than the surface of the sun. There are many countries around the world, and none of them can claim to be the center of the Earth. The concept of the Earth's center is a scientific and geographical term and has nothing to do with any nation's political boundaries or territories.